Two new species of Harpalyce (Leguminosae, Papilionoideae) from the Cerrado hotspot of biodiversity in Brazil
- PDF / 3,818,720 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 115 Downloads / 222 Views
ISSN: 0075-5974 (print) ISSN: 1874-933X (electronic)
Two new species of Harpalyce (Leguminosae, Papilionoideae) from the Cerrado hotspot of biodiversity in Brazil Wallace M. B. São-Mateus1, Marcelo Fragomeni Simon2, Luciano Paganucci de Queiroz3, Jomar Gomes Jardim4,5 & Domingos B. O. S. Cardoso6
Summary. Two new Brazilian species of Harpalyce (Leguminosae, Papilionoideae, Brongniartieae) are described and illustrated from the Cerrado hotspot of biodiversity. Harpalyce correntina occurs in western Bahia state, while Harpalyce tombadorensis is apparently endemic to the Serra do Tombador in northern Goiás state. Harpalyce correntina is morphologically similar to H. hilariana but it differs mainly by the ferruginous-tomentose indumentum on the branches and leaf rachis, persistent stipules, narrower leaflets, and an inflorescence that is usually shorter than the subtending leaf. Harpalyce tombadorensis is related to H. robusta but it differs by its shorter stipules, leaflets with brochidodromous venation, glabrous upper surface and attenuate-apiculate apex, smaller linear-triangular bracteoles and larger legumes with valves slightly reticulate-veined externally. The taxonomy, geographic distribution, conservation status, and phenology of the newly described species are also provided. Resumo. Duas novas espécies de Harpalyce (Leguminosae, Papilionoideae, Brongniartieae) do Cerrado brasileiro são
descritas e ilustradas. Harpalyce correntina ocorre no oeste da Bahia, enquanto Harpalyce tombadorensis é aparentemente endêmica da Serra do Tombador no norte do estado de Goiás. Harpalyce correntina assemelha-se a H. hilariana, mas difere pelos ramos e raques foliares ferrugíneo-tomentosos, estípulas persistentes, folíolos mais estreitos e inflorescências geralmente mais curtas que as folhas adjacentes. Harpalyce tombadorensis é mais relacionada com H. robusta, mas difere pelas estípulas menores, folíolos com venação broquiddroma, face adaxial glabra e ápice atenuado-reticulado, bractéolas menores e linear-triangulares e frutos maiores com valvas levemente reticuladas. Além disso, são fornecidas informações sobre a taxonomia, distribuição geográfica, status de conservação e fenologia das novas espécies. Key Words. Brongniartieae, Bahia, Fabaceae, Goiás, savanna, taxonomy.
Introduction The extraordinary fire-adapted savanna-like vegetation of the Cerrado covers 22% of the Brazilian territory in a large and mostly continuous expanse of approximately two million km2 across the Central Brazilian plateau, but also extends into Bolivia and Paraguay (Ratter et al. 1997; Simon & Pennington 2012). The Cerrado’s spectacular plant diversity comprises at least 12,100 species of seed plants of which 4,252 are endemic, and the Leguminosae is among the largest angiosperm families with approximately 1,207 species (BFG 2015). These figures, together with the provision of important ecosystem services, make the Cerrado phytogeographic domain one of the main global
hotspots of biodiversity (Myers et al. 2000; Mittermeier et al. 2005; Strassburg et a
Data Loading...
